India Post — Product delivered but i didn't get.

Address: 560095

Website: www.indiapost.gov.in/vas/Pages/IndiaPostHome.aspx

Hi, rs[protected]cn my track id
When i check it in website it shows,
May 08, 2017
09:15 am
Receive item at delivery office (Inb) india post international
Koramangala vi bk, india.

Still i didn't get my parcel. I went to the post office they told firstly speed post come to some other branch. When again i showed the track report they told item didnt come to their office yet. Again i showed the track report, then they asked my address and i showed it. Then officials started checking it and told me its delivered. Still i didnt get the parcel yet. To whom they delivered? How they can deliver parcel to a wrong person who dont have id card. What should i do? What action i must take?